Home / 21,017.42-31,526.68-5,435

Finding the Fourth Proportional to 21,017.42, 31,526.68 and 5,435

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Solution

The fourth proportional to 21,017.42, 31,526.68 and 5,435 is: 8,152.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.42 : 31,526.68 = 5,435 : x
  2. Step 2: Convert to fraction form
    21,017.42/31,526.68 = 5,435/x
  3. Step 3: Cross multiply
    21,017.42x = 31,526.68 × 5,435
  4. Step 4: Simplify right side
    21,017.42x = 171,347,505.80
  5. Step 5: Solve for x
    x = 171,347,505.80/21,017.42
  6. Step 6: Final answer
    x = 8,152.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.